$OpenBSD: patch-effects_cpp,v 1.1 2017/05/24 18:49:31 espie Exp $
needs a virtual destructor implementation

Index: effects.cpp
--- effects.cpp.orig
+++ effects.cpp
@@ -24,6 +24,10 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
 #include "njamfont.h"
 #include "effects.h"
 
+
+SpecialEffect::~SpecialEffect()
+{
+}
 extern SDL_Surface *Screen;
 //-----------------------------------------------------------------------------
 Effects::~Effects()
